Firpo, P. (1978). Copyart: The first complete guide to the copy machine / created by Patrick Firpo (1. print.). Marek.
Citazione stile Chigago Style (17a edizione)Firpo, Patrick. Copyart: The First Complete Guide to the Copy Machine / Created by Patrick Firpo. 1. print. New York, N.Y.: Marek, 1978.
Citatione MLA (8a ed.)Firpo, Patrick. Copyart: The First Complete Guide to the Copy Machine / Created by Patrick Firpo. 1. print. Marek, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.